871c724773
Convert the last use of getPhysicalRegisterRegClass and remove it.
...
AggressiveAntiDepBreaker should not be using getPhysicalRegisterRegClass. An
instruction might be using a register that can only be replaced with one from
a subclass of getPhysicalRegisterRegClass.
With this patch we use getMinimalPhysRegClass. This is correct, but
conservative. We should check the uses of the register and select the
largest register class that can be used in all of them.
llvm-svn: 108122
2010-07-12 02:55:34 +00:00
f128bdcb55
Make post-ra scheduling, anti-dep breaking, and register scavenger (conservatively) aware of predicated instructions. This enables ARM to move if-conversion before post-ra scheduler.
...
llvm-svn: 106091
2010-06-16 07:35:02 +00:00
848548300d
Not all entries in the range will have an SUnit. Check for that when looking
...
for debug information.
llvm-svn: 105324
2010-06-02 15:29:36 +00:00
12ac8f0352
Update debug information when breaking anti-dependencies. rdar://7759363
...
llvm-svn: 105300
2010-06-01 23:48:44 +00:00
35bc4d46cb
Make BreakAntiDependencies' SUnits argument const, and make the Begin
...
and End arguments by-value rather than by-reference.
llvm-svn: 101830
2010-04-19 23:11:58 +00:00
67dd3a4464
Tidy whitespace.
...
llvm-svn: 100904
2010-04-09 21:38:26 +00:00
b06015aa69
move target-independent opcodes out of TargetInstrInfo
...
into TargetOpcodes.h. #include the new TargetOpcodes.h
into MachineInstr. Add new inline accessors (like isPHI())
to MachineInstr, and start using them throughout the
codebase.
llvm-svn: 95687
2010-02-09 19:54:29 +00:00
eb431da074
80 column and whitespace cleanup
...
llvm-svn: 92837
2010-01-06 16:48:02 +00:00
75a2efb06d
Change errs() to dbgs().
...
llvm-svn: 92093
2009-12-24 00:14:25 +00:00
a45fe67667
<rdar://problem/7453528>. Track only physical registers that are valid for the target.
...
llvm-svn: 90970
2009-12-09 17:18:22 +00:00
3f3a8b1c7e
<rdar://problem/6721894>. Allow multiple registers to be renamed together (super and sub) if necessary to break an anti-dependence.
...
llvm-svn: 89722
2009-11-24 00:59:08 +00:00
5305dc0be1
Restructure code to allow renaming of multiple-register groups for anti-dep breaking.
...
llvm-svn: 89511
2009-11-20 23:33:54 +00:00
80a03cc0b1
Remove some old experimental code that is no longer needed. Remove additional, speculative scheduling pass as its cost did not translate into significant performance improvement. Minor tweaks.
...
llvm-svn: 89471
2009-11-20 19:32:48 +00:00
dd1c6198d4
Fix a couple of problems with maintaining liveness information for antidep breaking.
...
llvm-svn: 89404
2009-11-19 23:12:37 +00:00
b9fe5d5d02
Allow target to specify regclass for which antideps will only be broken along the critical path.
...
llvm-svn: 88682
2009-11-13 19:52:48 +00:00
da83f7d58b
Rename registers to break output dependencies in addition to anti-dependencies.
...
llvm-svn: 87015
2009-11-12 19:08:21 +00:00
cf89db135e
Allow targets to specify register classes whose member registers should not be renamed to break anti-dependencies.
...
llvm-svn: 86628
2009-11-10 00:15:47 +00:00
bed7cb6c1d
Fix bug in aggressive antidep breaking; liveness was not updated correctly for regions that do not have antidep candidates.
...
llvm-svn: 86172
2009-11-05 21:06:09 +00:00
542649463b
Replace std::map.at() with std::map[].
...
llvm-svn: 86102
2009-11-05 01:45:50 +00:00
7d8878add2
Break anti-dependencies using free registers in a round-robin manner to avoid introducing new anti-dependencies.
...
llvm-svn: 86098
2009-11-05 01:19:35 +00:00
8501dbbe10
Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed.
...
llvm-svn: 85939
2009-11-03 20:57:50 +00:00
faa7660fd0
Between scheduling regions, correctly maintain anti-dep breaking state so that we don't incorrectly rename registers that span these regions.
...
llvm-svn: 85537
2009-10-29 23:30:59 +00:00
9f1b2d4619
Fix a couple of bugs in aggressive anti-dep breaking.
...
llvm-svn: 85522
2009-10-29 19:17:04 +00:00
e056d1077e
Allow the aggressive anti-dep breaker to process the same region multiple times. This is necessary because new anti-dependencies are exposed when "current" ones are broken.
...
llvm-svn: 85166
2009-10-26 22:31:16 +00:00
de11f36ab7
Add aggressive anti-dependence breaker. Currently it is not the default for any target. Enable with -break-anti-dependencies=all.
...
llvm-svn: 85145
2009-10-26 19:32:42 +00:00
Rafael Espindola